Valve



VALVE Filed Dec. 2, 1925 GHARLESPE 15m/mum..

Patented July 30, 1929.

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i ES E. EISENHA'UEB, 0F DAYTON, OHIO, ASSIGNOR TO THE DURO CMP .I 'ZT .DAYTOBL OHI, A CORPORATION F OHIG.

VALVE.

Application filed December 2, 1925. Serial I o. 72,702.

My invention relates to valves.

It is the object of my inventionto provide a quick-acting, snap-action valve which will convert the direction of the passage of fluid from one direction to the other and 'provide for the exhausting of the fluid from hydrostaticvalves which are controlled by the master needle valve which is the subject matter of this application.

It is my object to provide a valve which will -move positively and'quickly from one position to the other.

Referring to the drawings :-v

Figure 1 is -a section through this valve;

Figure v2 is a section through a portion of the needle valve showing the parts in exhausting position.

Referring to the drawings in detail, 1 is a bracket supporting a tubular housing 2,-

the lower end of which isthreaded to' a casing 3. This casing supports a pair of spaced arms 4 on which are pivoted at 5 the links 6 having shoulders 7. The1J upper free ends of these links are connected together by a helical spring 8 which tends to draw them together. l The shoulders on these links engage .with the shoulders 9 on the valve Istem 10. The upper end of this valve stem is provided with a cross pin 11 which engages with a helical spring 13 contained within a supporting casing 14, one end of which is slidably mounted on the valve stem 10 and the other end of which is connected l to an actuating lever 15. The action of this end and to a suitable support at the other. The lower end of this valve stem is connected to a collar 17, the bottom of `which engages a helical spring 18 which is sup ported on the Casin 3. Within the bottom of this casing 3 is a fth helical spring designated 19. The spring presses a packing 20 and washer 21 around the valve stem 22 within the casing 23 which is threaded within the casing 3. This casing 23 is provided with a chamber 24 having an exhaust port 25 and an inlet port 26. This inlet port communicates with a chamber 27 within a casing 28 threaded on the casing 23 at its lower end. This chamber 27 is provided lever is resisted by the helical spring 16l which is connected to the housing 14 at one with an inlet port 29 for the incoming water whlch 1s distributed through the distribution ports36 and 31 or through the exhaust port 26.

Met/tod of operation.

.part of the casing 14 to the end that the links 6 are forced apart. As the links 6 move away from each other, due to the action of the casing 14, the shoulders 7 are brought out of engagement with the shoulders 9, and as soon as these shoulders are released from engagement with each other, the valve stem 10, having nosupport, yields to the action of the spring 13 and 'the pressure on the lever 15 to open the port 26, due to the immediate lowering of the valve 34. This opening of the port 26 is instantaneous because before the shoulders 9 are released from the shoulders 7 suflicient pressure has been accumulated in spring 13 so that as soon as the shoulders are released from each other the valve stem immediately drops and opens thevport 26.

It is understood that the pressure on 15 works against spring 16 and sprin'g 18 at all times tends to close the port 26 by means of the valve 34.

Assuming that the valve stem and associated mechanism are in their lowered position and the pressure is removed from the lever 15. When this'takes place the spring 16, which has been expanded due to the downward pressure on the lever 15, and the spring 18, which has been compressed, immediately snap the valve member34 to a position to close the port 26. Immediately after the pressure is removed from the lever 15 the cam surface 32 on the casing 14 begins to release the upper inner surfaces of the links 6, thereby permitting these links to gradually come together, but while this The pressure on the lever 15 tends' action is taking place the whole valve stem f is also moving upwardly so that by the time that the cam 32 is removed from the upper part of the link 6 the shoulders 9 `are even with or about past the shoulders V7. In this condition the links 6 are brought together by means of the spring attached to th e upper ends thereof so that the valve stem 1s again locked in its upper position, as indicated 1n Fi re 1.

t is of course understood thatv I desire to comprehend within my invention such modifications as may be necessary to adapt it to varying conditions and uses.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. In combination, a needle valve, an inlet port and an exit port controlled thereby, means to actuate said valve and means to forcibly move said valve and hold it to and in 'its inal position, said last mentioned means consisting of separately acting springs acting in opposite directions.

2. he combination in a needle valve, of a valve stem, a valve member adapted to close entrance and exit ports in a chamber having distribution ports, a distribution chamber, an exhaust chamber, and spaced separately and oppositely acting means to forcibly hold and assist in the closing or opening of said valve so that the valve will be snapped into open or closed position.

3. In a needle valve, a distribution chamberhaving distribution ports, an inlet port vand an exhaust port, an exhaust chamber,

means for forcing the valve open, means for yieldingly closing said exhaust chamber, link means and link released means to abruptly snap the valve closed or open and hold it in such open or closed position.

4. In a needle valve, a distribution chamber having distribution ports, an inlet port and an exhaust port, an exhaust chamber,

lmeans for forcing the valve open, means for yieldingly closing said exhaust chamber,

means to abruptly snap the valve closed or open and hold it in such open or closed position, said means consisting of shoulders the valve stem a apted to actuate the valve vstem when a predetermined compression is reached overcoming the resistance of the resisting means suddenly.

6. In a valve mechanism, a housing, a valve operating means mounted within sald housing, said valve operating means including a valve stem, a casing slldably fttlng over one lend of said valve stem, a spring 1n said easing engaging the valve s'tem to hold the casing and the stem in expalided relation to each other, means in the h onsin to enl gage the stem to hold the valve close means .on the casing to engage and release the lastnamed means whenv the casin is moved on the stem,- and means for app ying pressure to the casing whereby the -spring is compressed, the stem-holding means is released and the valve is instantaneously opened.

7. In a valve mechanism, a housing, a Valve operating means mounted in said housing and consisting of a valve stem, a casing slidably fitting over the end of the valve stem, a spring yin said casing engaging the valve stem to hold the casing and the stem in extended relation to each other, spring operated means in the housing to engage the stem to hold the valve closed, means associated with the casing and adapted to engage and release the last-named means when the casing is moved against the action of the spring, and means for applying pressure to the casing whereby the spring pressed stem-holding means is released and the valve is instantaneously opened.

8. In combination, a valve and valve stem, an inlet part and an outlet part controlled thereby, links to engage the stem to lock said valve in one position, and a casing inclosing the end of said valve stem and adapted on being pressed onto. said stem to engage said links to release the valve stem whereby the valve will shift to lanother position.

9. In combination, a valve and a valve stem, an inlet part and an outlet part controlled thereby, links to engage the stem to lock said valve in one position, a casing inclosing the end of said valve stem,- and a spring between said casing andsaid stem, said casing adapted on b eing pressed against said spring to engage said links torelease the stem whereby the valve will snap to another position due to the action of the spring in said casing.

10. In combination, a valve and a'valve stem, an inlet part and an outlet part controlled thereby, holding means engaging said stenrwto hold said valve in one position, and means'movable longitudinally of said stem to first release said holding means and los then to shift said valve to another position.

In testimony whereof, I aix my signa ure.

CHARLES P. EISENI-IAUEt L 

